Abstract
Coal-rock interface recognition is one of the key unaddressed problems in unmanned mining condition. Therefore, it is important that efforts should be made to detect coal-rock interface. In the study, Ground Penetrating Radar (GPR) has been used as a non-contacting means for coal-rock detection. We first establish three layered model of coal-rock and give the mathematical analysis of this model. Then numerical simulation and field experiment are carried out. Finally, in order to interpret radar image, an improved image segmentation algorithm is proposed. The experimental results show that it is feasible to detect coal-rock interface by GPR and the improved algorithm is well to interpret radar image of coal-rock interface.
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